检索结果相关分组
- 鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
- 作者： 蒋剑虹 来源：江西师范大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
- 长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
- 作者： 于悦 来源：华中农业大学 年份：2016 文献类型 ：学位论文
- 描述：长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
- 鄱阳湖生态系统长期变化对气候——人为环境的响应研究
- 作者： 郭娅 来源：中国科学院大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖生态系统长期变化对气候——人为环境的响应研究
- 鄱阳湖典型洲滩湿地水分垂向运移过程研究
- 作者： 林欢 来源：中国科学院大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖典型洲滩湿地水分垂向运移过程研究
- 鄱阳湖流域史前人类遗址时空分布及其环境响应
- 作者： 徐佳佳 贾玉连 马春梅 朱诚 吴立 李育远 王鑫浩 来源：地理学报(英文版) 年份：2016 文献类型 ：期刊 关键词： expanded northward geographic records 环境响应 鄱阳湖流域 climatic ancient Holocene southeast
- 描述：The temporal-spatial geographic distribution of archaeological sites and its feature between 10.0–2.8 ka BP(ka BP= thousands of years before 0 BP, where “0 BP” is defined as the year AD 1950) were determined, based on GIS spatial analysis in the Poyang Lake Basin. The relationship between geographic distribution of sites of different periods under subsistence existence of ancient civilizations, climate and environmental change was investigated. The results revealed numerous archaeological sites of the Neolithic Age(10.0–3.6 ka BP). The sites were mainly located in the northern part of the Poyang Lake Basin, a hilly and mountainous area with many river terraces suitable for the development of human civilization. The number of archaeological sites rapidly increased during the Shang and Zhou dynasties(3.6–2.8 ka BP) and spread widely on the floodplains of the middle and lower reaches of Ganjiang River and onto the west, south, and southeast beach areas of the Poyang Lake. Holocene records of climate change suggested that it was possible that climate fluctuations had a great impact on human evolution in the study area. Before 3.6 ka BP, westward and northward expansion of Neolithic cultures in the Poyang Lake watershed occurred under the background of climate amelioration(becoming warmer and wetter). The ancient people lived in the hilly areas with high elevation. The simple mode of a fishing and gathering economy was mostly suited to this area in the early Neolithic Age. The scope of human activities was expanded and cultural diversity developed in the late Neolithic Age. However, with population growth and increasing survival pressure in a dry-cold climatic stage after 3.6 ka BP, this simple living mode had to be abandoned, and various forms of economy, the majority being agriculture, were developed on flood plains of the lower reaches of numerous rivers around Poyang Lake. This promoted flourishing of the Bronze culture of South China.
- 全文：The temporal-spatial geographic distribution of archaeological sites and its feature between 10.0–2.8 ka BP(ka BP= thousands of years before 0 BP, where “0 BP” is defined as the year AD 1950) were determined, based on GIS spatial analysis in the Poyang Lake Basin. The relationship between geographic distribution of sites of different periods under subsistence existence of ancient civilizations, climate and environmental change was investigated. The results revealed numerous archaeological sites of the Neolithic Age(10.0–3.6 ka BP). The sites were mainly located in the northern part of the Poyang Lake Basin, a hilly and mountainous area with many river terraces suitable for the development of human civilization. The number of archaeological sites rapidly increased during the Shang and Zhou dynasties(3.6–2.8 ka BP) and spread widely on the floodplains of the middle and lower reaches of Ganjiang River and onto the west, south, and southeast beach areas of the Poyang Lake. Holocene records of climate change suggested that it was possible that climate fluctuations had a great impact on human evolution in the study area. Before 3.6 ka BP, westward and northward expansion of Neolithic cultures in the Poyang Lake watershed occurred under the background of climate amelioration(becoming warmer and wetter). The ancient people lived in the hilly areas with high elevation. The simple mode of a fishing and gathering economy was mostly suited to this area in the early Neolithic Age. The scope of human activities was expanded and cultural diversity developed in the late Neolithic Age. However, with population growth and increasing survival pressure in a dry-cold climatic stage after 3.6 ka BP, this simple living mode had to be abandoned, and various forms of economy, the majority being agriculture, were developed on flood plains of the lower reaches of numerous rivers around Poyang Lake. This promoted flourishing of the Bronze culture of South China.
- 鄱阳湖特大桥36号主墩钢围堰施工专项方案
- 作者： 郭跃 来源：四川水泥 年份：2016 文献类型 ：期刊 关键词： 预防措施 围堰施工工序 鄱阳湖特大桥
- 描述：桥梁工程建设中,围堰的施工技术是工程施工中的重点和难点,本文结合一个实际的桥梁施工方案,对它的施工设计和整体部署进行介绍,对该项工程的围堰施工的具体流程进行分析,做好各个方面的预防工作,为本项工程能够顺利、安全完工提供参考资料。
- 全文：桥梁工程建设中,围堰的施工技术是工程施工中的重点和难点,本文结合一个实际的桥梁施工方案,对它的施工设计和整体部署进行介绍,对该项工程的围堰施工的具体流程进行分析,做好各个方面的预防工作,为本项工程能够顺利、安全完工提供参考资料。
- 鄱阳湖生态系统长期变化对气候——人为环境的响应研究
- 作者： 郭娅 来源：中国科学院大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖生态系统长期变化对气候——人为环境的响应研究
- 鄱阳湖湿地水质空间分异及影响因素研究
- 作者： 吴燕平 来源：江西师范大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖湿地水质空间分异及影响因素研究
- 由环鄱阳湖国际自行车大赛玉山站联想到的力学问题
- 作者： 陈明 来源：湖南中学物理 年份：2016 文献类型 ：期刊 关键词： 联想 力学 自行车
- 描述：结合自行车大赛,联想到一些力学问题,将知识与实际生活相联系,从而激发学生学习兴趣,促进学生学习热情,达到较好的教学效果。
- 全文：结合自行车大赛,联想到一些力学问题,将知识与实际生活相联系,从而激发学生学习兴趣,促进学生学习热情,达到较好的教学效果。
- 基于PSR模型鄱阳湖湿地生态安全评价
- 作者： 王点 来源：江西师范大学 年份：2016 文献类型 ：学位论文
- 描述：基于PSR模型鄱阳湖湿地生态安全评价